Date: Wed, 17 Mar 1999 11:50:45 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: "Daniel C. Sobral" <dcs@newsguy.com> Cc: hackers@FreeBSD.ORG Subject: Re: volatile question Message-ID: <199903171950.LAA31589@apollo.backplane.com> References: <36EFF74A.F42597F4@newsguy.com>
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:typedef struct aiocb {
: int aio_fildes; /* File descriptor */
: off_t aio_offset; /* File offset for I/O */
: volatile void *aio_buf; /* I/O buffer in process
:space */
: ^^^^^^^^^^^^^^^^^^^^^^^
:
:Is the volatile keyword in the right position? Shouldn't it be void*
:volatile aio_buf?
It depends whether you want a pointer to volatile data, or whether
you want a volatile pointer to normal data.
volatile void *aio_buf;
normal pointer to volatile data
void * volatile aio_buf;
volatile pointer to normal data
volatile void * volatile aio_buf;
volatile pointer to volatile data
-Matt
Matthew Dillon
<dillon@backplane.com>
:--
:Daniel C. Sobral (8-DCS)
:dcs@newsguy.com
:dcs@freebsd.org
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